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I. Watson, P. Brandon, A. Basden, "Common-Objects: An Object Oriented Inference System Shared by Three Construction Knowledge-Bases", in B.H.V. Topping, (Editor), "Knowledge Based Systems for Civil & Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 119-125, 1993. doi:10.4203/ccp.17.5.1

Abstract

This paper describes the implementation of an object-oriented inferencing mechanism that is shared by three separate knowledge-based systems. The inferencing mechanism, called the Agenda Manager, supports both goal-driven backward chaining and data-driven forward chaining through a network of objects that make up the knowledge bases. Objects in a knowledge base maintain two values or "truths"; one value they have inferred or assumed based on their own methods, and the other that can be set by a user. Moreover, there are four classes of objects in a knowledge base reflecting levels of certainty that the knowledge engineer has in how they infer their values. This division of objects is used by the knowledge engineer to focus knowledge elicitation and analysis.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 17 KNOWLEDGE BASED SYSTEMS FOR CIVIL & STRUCTURAL ENGINEERING Edited by: B.H.V. Topping Paper V.1 Common-Objects: An Object Oriented Inference System Shared by Three Construction Knowledge-Bases I. Watson, P. Brandon and A. Basden Department of Surveying, University of Salford, Salford, England doi:10.4203/ccp.17.5.1 purchase the full-text of this paper Full Bibliographic Reference for this paper I. Watson, P. Brandon, A. Basden, "Common-Objects: An Object Oriented Inference System Shared by Three Construction Knowledge-Bases", in B.H.V. Topping, (Editor), "Knowledge Based Systems for Civil & Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 119-125, 1993. doi:10.4203/ccp.17.5.1 Abstract This paper describes the implementation of an object-oriented inferencing mechanism that is shared by three separate knowledge-based systems. The inferencing mechanism, called the Agenda Manager, supports both goal-driven backward chaining and data-driven forward chaining through a network of objects that make up the knowledge bases. Objects in a knowledge base maintain two values or "truths"; one value they have inferred or assumed based on their own methods, and the other that can be set by a user. Moreover, there are four classes of objects in a knowledge base reflecting levels of certainty that the knowledge engineer has in how they infer their values. This division of objects is used by the knowledge engineer to focus knowledge elicitation and analysis. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £60 +P&P)
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